Composition comprising polymer particles, alkylcellulose particles and water

ABSTRACT

The present invention relates to a composition comprising particles of at least one polymer that is surface-stabilized with a stabilizer, the polymer of the particles being a C 1 -C 4  alkyl (meth)acrylate polymer; the stabilizer being an isobornyl (meth)acrylate polymer chosen from isobornyl (meth)acrylate homopolymer and statistical copolymers of isobornyl (meth)acrylate and of C 1 -C 4  alkyl (meth)acrylate present in an isobornyl (meth)acrylate/C 1 -C 4  alkyl (meth)acrylate weight ratio of greater than 4; at least one hydrocarbon-based oil, at least alkyl cellulose, the alkyl residue of which comprises between 2 and 6 carbon atoms; and water. 
     The invention also relates to a process for making up and/or caring for human keratin materials, in which the composition according to any one of the preceding claims is applied.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority of U.S. ProvisionalApplication No. 62/093,802, filed Dec. 18, 2014, the entire content ofwhich is incorporated herein by reference.

The present invention relates to compositions for making up and/orcaring for human keratin materials, such as the lips.

These compositions are well known and although they have specificproperties depending on their use, there has been a very clear trend fora few years toward developing compositions with improved persistence.This avoids, on the one hand, the need to reapply the composition toooften and, on the other hand, reduces transfer onto supports with whichthe made-up areas may come into contact (clothing, cups, etc.) or elsetheir removal via the action of external agents (sebum, food, rain,etc.).

It is for this reason that the compositions for which this property issought generally comprise at least one film-forming agent. The latter isoften a polymer in a solubilized form or dispersed in one of the phasesof the composition. It allows the composition, once applied, to formafter drying a film that is more cohesive and persistent on the support.

One of the problems encountered with such film-forming agents is thefact that the resulting compositions give a deposit which may beconsidered too tacky, often giving rise to difficulties in applying thecomposition.

Cosmetic compositions are thus sought, for example intended for makingup and/or caring for keratin materials, such as the lips, which compriseat least one film-forming agent and which make it possible to deposit acomfortable, non-tacky film which has good persistence and in particulargood resistance to oils.

One subject of the invention is thus a composition comprising particlesof at least one polymer that is surface-stabilized with a stabilizer,the polymer of the particles being a C₁-C₄ alkyl (meth)acrylate polymer;the stabilizer being an isobornyl (meth)acrylate polymer chosen fromisobornyl (meth)acrylate homopolymer and statistical copolymers ofisobornyl (meth)acrylate and of C₁-C₄ alkyl (meth)acrylate present in anisobornyl (meth)acrylate/C₁-C₄ alkyl (meth)acrylate weight ratio ofgreater than 4; at least one hydrocarbon-based oil, at least alkylcellulose, the alkyl residue of which comprises between 2 and 6 carbonatoms; water.

A subject of the invention is also a process for making up and/or caringfor keratin materials, in particular the lips, which consists inapplying said composition.

However, other advantages will emerge more clearly on reading thedescription and the examples that follow.

It should be noted that, in the remainder of the description, unlessotherwise indicated, the limits indicated for a range are included inthat range.

The expressions “at least one” and “several” are used withoutdistinction.

Hydrocarbon-Based Oil

The composition according to the invention comprises a firsthydrocarbon-based oil.

This oil may be volatile (saturating vapour pressure greater than orequal to 0.13 Pa measured at 25° C.) or non-volatile (saturating vapourpressure less than 0.13 Pa measured at 25° C.).

Preferably, the hydrocarbon-based oil is volatile.

The hydrocarbon-based oil is an oil (non-aqueous compound) that isliquid at room temperature (25° C.).

The term “hydrocarbon-based oil” means an oil formed essentially from,or even consisting of, carbon and hydrogen atoms, and optionally oxygenand nitrogen atoms, and not containing any silicon or fluorine atoms. Itmay contain alcohol, ester, ether, carboxylic acid, amine and/or amidegroups.

The hydrocarbon-based oil may be chosen from:

hydrocarbon-based oils containing from 8 to 16 carbon atoms, andespecially:

-   -   branched C₈-C₁₆ alkanes, for instance C₈-C₁₆ isoalkanes of        petroleum origin (also known as isoparaffins), for instance        isododecane (also known as 2,2,4,4,6-pentamethylheptane),        isodecane, isohexadecane and, for example, the oils sold under        the trade name Isopar or Permethyl,    -   linear alkanes, for instance n-dodecane (C₁₂) and n-tetradecane        (C₁₄) sold by Sasol under the respective references Parafol        12-97 and Parafol 14-97, and also mixtures thereof, the        undecane-tridecane mixture, the mixtures of n-undecane (C₁₁) and        of n-tridecane (C₁₃) obtained in Examples 1 and 2 of patent        application WO 2008/155 059 from the company Cognis, and        mixtures thereof,

short-chain esters (containing from 3 to 8 carbon atoms in total) suchas ethyl acetate, methyl acetate, propyl acetate or n-butyl acetate,

-   -   hydrocarbon-based oils of plant origin such as triglycerides        consisting of fatty acid esters of glycerol, the fatty acids of        which may have chain lengths varying from C₄ to C₂₄, these        chains possibly being linear or branched, and saturated or        unsaturated; these oils are especially heptanoic or octanoic        acid triglycerides, or alternatively wheatgerm oil, sunflower        oil, grapeseed oil, sesame seed oil, corn oil, apricot oil,        castor oil, shea oil, avocado oil, olive oil, soybean oil, sweet        almond oil, palm oil, rapeseed oil, cottonseed oil, hazelnut        oil, macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin        oil, marrow oil, blackcurrant oil, evening primrose oil, millet        oil, barley oil, quinoa oil, rye oil, safflower oil, candlenut        oil, passion-flower oil and musk rose oil; shea butter; or else        caprylic/capric acid triglycerides, for instance those sold by        the company Stéarineries Dubois or those sold under the names        Miglyol 810®, 812® and 818® by the company Dynamit Nobel,    -   synthetic ethers containing from 10 to 40 carbon atoms,    -   linear or branched hydrocarbons of mineral or synthetic origin,        such as petroleum jelly, polydecenes, hydrogenated polyisobutene        such as Parleam®, squalane and liquid paraffins, and mixtures        thereof,    -   synthetic esters such as oils of formula R₁COOR₂ in which R₁        represents a linear or branched fatty acid residue containing        from 1 to 40 carbon atoms and R₂ represents an in particular        branched hydrocarbon-based chain containing from 1 to 40 carbon        atoms, on the condition that R₁+R₂≧10, for instance purcellin        oil (cetostearyl octanoate), isopropyl myristate, isopropyl        palmitate, C₁₂ to C₁₅ alkyl benzoates, hexyl laurate,        diisopropyl adipate, isononyl isononanoate, 2-ethylhexyl        palmitate, isostearyl isostearate, 2-hexyldecyl laurate,        2-octyldecyl palmitate, 2-octyldodecyl myristate, alkyl or        polyalkyl heptanoates, octanoates, decanoates or ricinoleates        such as propylene glycol dioctanoate; hydroxylated esters such        as isostearyl lactate, diisostearyl malate and 2-octyldodecyl        lactate; polyol esters and pentaerythritol esters,    -   fatty alcohols that are liquid at room temperature, with a        branched and/or unsaturated carbon-based chain containing from        12 to 26 carbon atoms, for instance octyldodecanol, isostearyl        alcohol, oleyl alcohol, 2-hexyldecanol, 2-butyloctanol and        2-undecylpentadecanol,    -   a mixture thereof.

More particularly, the content of hydrocarbon-based oil(s) ranges from20% to 75% by weight and preferably from 20% to 60% by weight, even morepreferably from 20% to 50% by weight relative to the weight of thecomposition.

This hydrocarbon-based oil may be provided totally or partly with thesurface-stabilized polymer particles, in particular when these particlesare introduced into the composition in the form of a pre-prepareddispersion of surface-stabilized polymer particles. In this case, thehydrocarbon-based oil present in the composition represents at least thenon-aqueous medium of the dispersion of polymer particles.

Advantageously, the hydrocarbon-based oil is apolar (thus formed solelyfrom carbon and hydrogen atoms).

The hydrocarbon-based oil is preferably chosen from hydrocarbon-basedoils containing from 8 to 16 carbon atoms and better still from 12 to 16carbon atoms, in particular the apolar oils described previously.

Preferentially, the hydrocarbon-based oil is isododecane. Moreparticularly, the isododecane content ranges from 20% to 75% by weightand preferably from 20% to 60% by weight, even more preferably from 20%to 50% by weight relative to the weight of the composition.

Preferably, the hydrocarbon-based oil(s), in particular isododecane,constitute the only oil(s) in the composition, or is (are) present in apredominant weight content relative to the additional oil(s) that may bepresent in the composition.

In accordance with a particular embodiment of the invention, if thecomposition contains one or more nonvolative oils, the content thereofadvantageously does not exceed 15% by weight, more particularly does notexceed 10% by weight, preferably 5% by weight relative to the weight ofthe composition, better still less than 2% by weight relative to theweight of the composition, or even does not contain any nonvolativeoil(s).

Polymer Particles

The composition according to the invention moreover comprises particles,which are generally spherical, of at least one surface-stabilizedpolymer.

Preferably, the particles are introduced into the composition in theform of a dispersion of particles, which are generally spherical, of atleast one surface-stabilized polymer, in an oily medium, advantageouslycontaining at least a hydrocarbon-based oil, as defined previously.

The polymer of the particles is a C₁-C₄ alkyl (meth)acrylate polymer.

The C₁-C₄ alkyl (meth)acrylate monomers may be chosen from methyl(meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl(meth)acrylate, n-butyl (meth)acrylate and tert-butyl (meth)acrylate.

A C₁-C₄ alkyl acrylate monomer is advantageously used. Preferentially,the polymer of the particles is a methyl acrylate and/or ethyl acrylatepolymer.

The polymer of the particles may also comprise an ethylenicallyunsaturated acid monomer or the anhydride thereof, chosen especiallyfrom ethylenically unsaturated acid monomers comprising at least onecarboxylic, phosphoric or sulfonic acid function, such as crotonic acid,itaconic acid, fumaric acid, maleic acid, maleic anhydride,styrenesulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylicacid, methacrylic acid, acrylamidopropanesulfonic acid oracrylamidoglycolic acid, and salts thereof.

Preferably, the ethylenically unsaturated acid monomer is chosen from(meth)acrylic acid, maleic acid and maleic anhydride.

The salts may be chosen from salts of alkali metals, for example sodiumor potassium; salts of alkaline-earth metals, for example calcium,magnesium or strontium; metal salts, for example zinc, aluminium,manganese or copper; ammonium salts of formula NH₄ ⁺; quaternaryammonium salts; salts of organic amines, for instance salts ofmethylamine, dimethylamine, trimethylamine, triethylamine, ethylamine,2-hydroxyethylamine, bis(2-hydroxyethyl)amine ortris(2-hydroxyethyl)amine; lysine or arginine salts.

The polymer of the particles may thus comprise or consist essentially of80% to 100% by weight of C₁-C₄ alkyl (meth)acrylate and of 0 to 20% byweight of ethylenically unsaturated acid monomer, relative to the totalweight of the polymer.

According to a first embodiment of the invention, the polymer consistsessentially of a polymer of one or more C₁-C₄ alkyl (meth)acrylatemonomers.

According to a second embodiment of the invention, the polymer consistsessentially of a copolymer of C₁-C₄ (meth)acrylate and of (meth)acrylicacid or maleic anhydride.

The polymer of the particles may be chosen from:

methyl acrylate homopolymers

ethyl acrylate homopolymers

methyl acrylate/ethyl acrylate copolymers

methyl acrylate/ethyl acrylate/acrylic acid copolymers

methyl acrylate/ethyl acrylate/maleic anhydride copolymers

methyl acrylate/acrylic acid copolymers

ethyl acrylate/acrylic acid copolymers

methyl acrylate/maleic anhydride copolymers

ethyl acrylate/maleic anhydride copolymers.

Advantageously, the polymer of the particles is a non-crosslinkedpolymer.

The polymer of the particles preferably has a number-average molecularweight ranging from 2000 to 10 000 000 and preferably ranging from 150000 to 500 000.

In the case of a particle dispersion, the polymer of the particles maybe present in the dispersion in a content ranging from 21% to 58.5% byweight and preferably ranging from 36% to 42% by weight, relative to thetotal weight of the dispersion.

The stabilizer is an isobornyl (meth)acrylate polymer chosen fromisobornyl (meth)acrylate homopolymer and statistical copolymers ofisobornyl (meth)acrylate and of C₁-C₄ alkyl (meth)acrylate present in anisobornyl (meth)acrylate/C₁-C₄ alkyl (meth)acrylate weight ratio ofgreater than 4, preferably greater than 4.5 and even more advantageouslygreater than or equal to 5. Advantageously, said weight ratio rangesfrom 4.5 to 19, preferably from 5 to 19 and more particularly from 5 to12.

Advantageously, the stabilizer is chosen from:

isobornyl acrylate homopolymers

statistical copolymers of isobornyl acrylate/methyl acrylate

statistical copolymers of isobornyl acrylate/methyl acrylate/ethylacrylate

statistical copolymers of isobornyl methacrylate/methyl acrylate

in the weight ratio described previously.

Preferably, the stabilizer is soluble in the hydrocarbon-based oil(s),in particular soluble in isododecane.

The stabilizing polymer preferably has a number-average molecular weightranging from 10 000 to 400 000 and preferably ranging from 20 000 to 200000.

The stabilizer is in contact with the surface, in particular of thepolymer particles, and thus makes it possible to stabilize theseparticles at the surface, in order to keep these particles in dispersionin the non-aqueous medium of the dispersion.

According to a theory which should not limit the scope of the presentinvention, the inventors put forward the hypothesis that the surfacestabilization of the C₁-C₄ alkyl (meth)acrylate polymer particlesresults from a phenomenon of surface adsorption of the stabilizer ontothe C₁-C₄ alkyl (meth)acrylate polymer particles.

Advantageously, the combination of the stabilizer+polymer of theparticles, present in particular in the dispersion comprises from 10% to50% by weight of polymerized isobornyl (meth)acrylate and from 50% to90% by weight of polymerized C₁-C₄ alkyl (meth)acrylate, relative to thetotal weight of the combination of the stabilizer+polymer of theparticles.

Preferentially, the combination of the stabilizer+polymer of theparticles present in particular in the dispersion comprises from 15% to30% by weight of polymerized isobornyl (meth)acrylate and from 70% to85% by weight of polymerized C₁-C₄ alkyl (meth)acrylate, relative to thetotal weight of the combination of the stabilizer+polymer of theparticles.

When the polymer particles are provided in the composition in the formof a pre-prepared dispersion, the oily medium of this polymer dispersioncomprises a first hydrocarbon-based oil. Reference may be made to thatwhich has been indicated previously concerning this oil as regards itsnature.

Advantageously, the hydrocarbon-based oil is apolar and preferablychosen from hydrocarbon-based oils containing from 8 to 16 carbon atoms,in particular the apolar oils described previously.

Preferentially, the hydrocarbon-based oil is isododecane.

The polymer particles, in particular in the dispersion, preferably havean average size, especially a number-average size, ranging from 50 to500 nm, especially ranging from 75 to 400 nm and better still rangingfrom 100 to 250 nm.

In general, a dispersion of surface-stabilized polymer particles that issuitable for use in the invention may be prepared in the followingmanner, which is given as an example.

The polymerization may be performed in dispersion, i.e. by precipitationof the polymer during formation, with protection of the formed particleswith a stabilizer.

In a first step, the stabilizing polymer is prepared by mixing theconstituent monomer(s) of the stabilizing polymer, with a radicalinitiator, in a solvent known as the synthesis solvent, and bypolymerizing these monomers. In a second step, the constituentmonomer(s) of the polymer of the particles are added to the stabilizingpolymer formed and polymerization of these added monomers is performedin the presence of the radical initiator.

When the non-aqueous medium is a non-volatile hydrocarbon-based oil, thepolymerization may be performed in an apolar organic solvent (synthesissolvent), followed by adding the non-volatile hydrocarbon-based oil(which should be miscible with said synthesis solvent) and selectivelydistilling off the synthesis solvent.

A synthesis solvent which is such that the monomers of the stabilizingpolymer and the free-radical initiator are soluble therein, and thepolymer particles obtained are insoluble therein, so that theyprecipitate therein during their formation, is thus chosen.

In particular, the synthesis solvent may be chosen from alkanes such asheptane or cyclohexane.

When the non-aqueous medium is a volatile hydrocarbon-based oil, thepolymerization may be performed directly in said oil, which thus alsoacts as synthesis solvent. The monomers should also be soluble therein,as should the free-radical initiator, and the polymer of the particleswhich is obtained should be insoluble therein.

The monomers are preferably present in the synthesis solvent, beforepolymerization, in a proportion of 5-20% by weight. The total amount ofmonomers may be present in the solvent before the start of the reaction,or part of the monomers may be added gradually as the polymerizationreaction proceeds.

The free-radical initiator may especially be azobisisobutyronitrile ortert-butyl peroxy-2-ethylhexanoate.

The polymerization may be performed at a temperature ranging from 70 to110° C.

The polymer particles are surface-stabilized, when they are formedduring the polymerization, by means of the stabilizer.

The stabilization may be performed by any known means, and in particularby direct addition of the stabilizer, during the polymerization.

The stabilizer is preferably also present in the mixture beforepolymerization of the monomers of the polymer of the particles. However,it is also possible to add it continuously, especially when the monomersof the polymer of the particles are also added continuously.

From 10% to 30% by weight and preferably from 15% to 25% by weight ofstabilizer may be used relative to the total weight of monomers used(stabilizer+polymer of the particles).

The polymer particle dispersion advantageously comprises from 30% to 65%by weight and preferably from 40% to 60% by weight of solids, relativeto the total weight of the dispersion.

Moreover, the composition according to the invention advantageouslycomprises a content of surface-stabilized polymer particles of between5% and 55% by weight and more specifically between 5% and 50% by weight,preferably between 8% and 45% by weight and even more preferably between10% and 40% by weight relative to the weight of composition.

Plasticizer

According to a particular embodiment of the invention, the compositioncomprises at least one plasticizer.

In the case where the polymer particles are provided in the form of adispersion, the plasticizer is then advantageously present in said oilydispersion.

The plasticizer(s) may be chosen from tri-n-butyl citrate, tripropyleneglycol monomethyl ether (INCI name: PPG-3 methyl ether) and trimethylpentaphenyl trisiloxane (sold under the name Dow Corning PH-1555 HRICosmetic Fluid by the company Dow Corning). These plasticizers make itpossible to improve the mechanical strength of the polymer film.

The plasticizer may be present in a content ranging from 2% to 50% byweight relative to the total weight of the polymer particles, preferablyfrom 2% to 40% by weight and even more particularly less than 20% byweight relative to the weight of the composition.

Ethylcellulose

As indicated previously, the composition according to the inventioncomprises at least alkylcellulose, the alkyl residue of which comprisesbetween 2 and 6 carbon atoms and preferably between 2 and 3 carbonatoms, and better still a composition according to the inventioncomprises ethylcellulose.

According to a particularly preferred embodiment, the alkylcellulose(the alkyl residue of which preferably comprises between 2 and 6 carbonatoms, preferentially ethylcellulose) may be present in a compositionaccording to the invention in a (solids) content ranging from 1% to 8%by weight and preferably from 2.5% to 6% by weight of alkylcellulosesolids relative to the total weight of said composition.

The alkylcellulose is a cellulose alkyl ether comprising a chain formedfrom β-anhydroglucose units linked together via acetal bonds. Eachanhydroglucose unit contains three replaceable hydroxyl groups, all orsome of these hydroxyl groups being able to react according to thefollowing reaction:RONa+C₂H₅Cl→ROC₂H₅+NaCl, in which R represents a cellulose radical.

Advantageously, the alkylcellulose may be chosen from ethylcellulose andpropylcellulose.

According to a particularly preferred embodiment, the alkylcellulose maybe ethylcellulose.

It is a cellulose ethyl ether.

Total substitution of the three hydroxyl groups would lead, for eachanhydroglucose unit, to a degree of substitution of 3, in other words toa content of alkoxy groups of 54.88%.

The ethylcellulose polymers used in a cosmetic composition according tothe invention are preferentially polymers with a degree of substitutionwith ethoxy groups ranging from 2.5 to 2.6 per anhydroglucose unit, inother words comprising a content of ethoxy groups ranging from 44% to50%.

According to a preferred mode, the alkylcellulose (preferablyethylcellulose) may be used in a composition of the invention in theform of particles dispersed in an aqueous phase, like a dispersion oflatex or pseudolatex type. The techniques for preparing these latexdispersions are well known to those skilled in the art.

The product sold by the company FMC Biopolymer under the name AquacoatECD-30, which consists of a dispersion of ethylcellulose stabilized withsodium lauryl sulfate and cetyl alcohol, is most particularly suitablefor use as an aqueous dispersion of ethylcellulose.

Water

The composition according to the invention comprises water.

The water content usually ranges between 10% and 50% by weight relativeto the weight of the composition and preferably between 10% and 40% byweight relative to the weight of the composition.

The composition according to the invention may be in the form of anoil-in-water or water-in-oil emulsion, but preferably a water-in-oilemulsion.

Water-Soluble Compound

The composition according to the invention may also comprise at leastone water-soluble compound.

In the present invention, the term “water-soluble compound” denotes acompound that is liquid at room temperature and water-miscible(miscibility with water of greater than 50% by weight at 25° C. andatmospheric pressure).

The water-soluble compounds that may be used in the compositionsaccording to the invention may also be volatile.

Among the water-soluble compounds that may be used in the compositionsin accordance with the invention, mention may be made especially ofmonoalcohols, which are preferably saturated, containing less than 8carbon atoms and preferably less than 5 carbon atoms, such as ethanol,isopropanol and butanol; saturated or unsaturated, linear or branchedC₂-C₈ and preferably C₃-C₆ polyols, comprising from 2 to 6 hydroxylgroups, and preferably glycerol, ethylene glycol, propylene glycol,1,3-butylene glycol, dipropylene glycol or diglycerol, and a mixturethereof.

Preferably, the content of water-soluble compound(s), if the compositionaccording to the invention comprises any, ranges from 0.2% to 10% byweight and preferably from 0.2% to 8% by weight, relative to the weightof the composition.

Surfactants

As indicated previously, the composition comprises at least onesurfactant that promotes the production of a reverse emulsion(water-in-oil). Preferably, the composition comprises at least onesurfactant whose HLB (hydrophilic/lipophilic balance) is less than 7.

Preferably, the composition thus comprises at least onehydrocarbon-based or silicone surfactant, or a mixture thereof.

More particularly, the surfactant is chosen from fatty acid esters ofpolyols; alkyl or alkoxy dimethicone copolyols bearing an alkyl oralkoxy chain that is pendent or at the end of the silicone backbone,containing, for example, from 6 to 22 carbon atoms; polymers of thepolyoxyalkylenated glycol fatty acid ester type, and mixtures thereof.

As regards the hydrocarbon-based surfactants of the type such as fattyacid esters of polyols, mention may be made in particular of fatty acidmono-, di-, tri- or sesqui-esters, in particular polyol laurates,oleates, stearates or isostearates. These polyols are more particularlychosen from sorbitol, glycerol, polyglycerols and polyethylene glycols,or mixtures thereof. Mention may be made most particularly of sorbitolor glyceryl mono-, di-, tri- or sesqui-oleates or stearates and glycerylor polyethylene glycol laurates.

Mention may also be made of glycerol and/or sorbitan esters, for examplethe polyglyceryl-3 diisostearate sold under the name Lameform TGI by thecompany Cognis, polyglyceryl-4 isostearate, such as the product soldunder the name Isolan GI 34 by the company Goldschmidt, sorbitanisostearate, such as the product sold under the name Arlacel 987 by thecompany ICI, sorbitan glyceryl isostearate, such as the product soldunder the name Arlacel 986 by the company ICI, and mixtures thereof.

As another hydrocarbon-based surfactant that may be used in theinvention to obtain a W/O emulsion, mention may be made of polymers ofthe polyoxyalkylenated glycol fatty acid ester type promotingwater-in-oil emulsions.

The fatty acid ester of said polymer is preferably polyhydroxylated. Inparticular, this polymer is a block polymer, preferably of ABAstructure, comprising poly(hydroxylated ester) blocks and polyethyleneglycol blocks.

The fatty acid ester of said emulsifying polymer as defined abovegenerally bears a chain comprising from 12 to 20 carbon atoms andpreferably from 14 to 18 carbon atoms. The esters may be chosenespecially from oleates, palmitates and stearates.

The polyethylene glycol blocks of said emulsifying polymer as definedabove preferably comprise from 4 to 50 mol of ethylene oxide and morepreferably from 20 to 40 mol of ethylene oxide.

A polymeric surfactant that is particularly suitable for preparing thecompositions of the invention is polyethylene glycoldipolyhydroxystearate with 30 OE, sold under the trade name Arlacel P135 by the company ICI.

As regards the silicone surfactants, the ones that are particularlysuitable for use are surfactants of the alkyl or alkoxy dimethiconecopolyol type bearing an alkyl or alkoxy chain that is pendent or at theend of the silicone backbone, for example containing from 6 to 22 carbonatoms.

Advantageously, the surfactant may be a C₈-C₂₂ alkyl dimethiconecopolyol, i.e. an oxypropylenated and/or oxyethylenatedpolymethyl(C₈-C₂₂)alkyldimethylmethylsiloxane.

The C₈-C₂₂ alkyl dimethicone copolyol is advantageously a compound offormula (I) below:

in which:

-   -   PE represents (—C₂H₄O)_(x)—(C₃H₆O)_(y)—R, R being chosen from a        hydrogen atom and an alkyl radical of 1 to 4 carbon atoms, x        ranging from 0 to 100 and y ranging from 0 to 80, x and y not        simultaneously being 0    -   m ranging from 1 to 40    -   n ranging from 10 to 200    -   o ranging from 1 to 100    -   p ranging from 7 to 21    -   q ranging from 0 to 4.

Preferably, in formula (I), R represents a hydrogen atom, m ranges from1 to 10; n ranges from 10 to 100; o ranges from 1 to 30; p is 15 and qis 3.

Preferably, as C₈-C₂₂ alkyl dimethicone copolyol, use is made of cetyldimethicone copolyol, especially the product whose INCI name is CetylPEG/PPG-10/1 Dimethicone, for instance the product sold under the nameAbil EM-90 by the company Evonik Goldschmidt.

Use may also be made of compounds of formula (II) below:

in which:

-   -   R₁, R₂ and R₃, independently of each other, represent a C₁-C₆        alkyl radical or a radical        —(CH₂)_(x)—(OCH₂CH₂)_(y)—(OCH₂CH₂CH₂)_(z)—OR₄, at least one        radical R₁, R₂ or R₃ not being an alkyl radical; R₄ being a        hydrogen, a C₁-C₃ alkyl radical or a C₂-C₄ acyl radical;    -   A is an integer ranging from 0 to 200;    -   B is an integer ranging from 0 to 50; on condition that A and B        are not simultaneously equal to zero;    -   x is an integer ranging from 1 to 6;    -   y is an integer ranging from 1 to 30; and    -   z is an integer ranging from 0 to 5.

According to one preferred embodiment, in the compound of formula (II),R₁=R₃=methyl radical, x is an integer ranging from 2 to 6 and y is aninteger ranging from 4 to 30. R₄ is in particular a hydrogen.

Examples of compounds of formula (II) that may be mentioned include thecompounds of formula (III):

in which A is an integer ranging from 20 to 105, B is an integer rangingfrom 2 to 10 and y is an integer ranging from 10 to 20.

Examples of silicone compounds of formula (II) that may also bementioned include the compounds of formula (IV):HO—(CH₂CH₂)_(y)—(CH₂)₃—[(CH₃)₂SiO]_(A′)—(CH₂)₃—(OCH₂CH₂)_(y)—OH  (IV)

in which A′ and y are integers ranging from 10 to 20.

Dimethicone copolyols that may be used include those sold under thenames DC 5329, DC 7439-146, DC 2-5695 and Q4-3667 by the company DowCorning; KF-6013, KF-6015, KF-6016, KF-6017 and KF-6028 by the companyShin-Etsu.

The compounds DC 5329, DC 7439-146 and DC 2-5695 are compounds offormula (III) in which, respectively, A is 22, B is 2 and y is 12; A is103, B is 10 and y is 12; A is 27, B is 3 and y is 12.

According to a particular embodiment, the silicone surfactant may be PEGpolydimethylsiloxyethyl dimethicone, sold in particular by the companyShin-Etsu under the reference KF-6028, PEG-10 dimethicone sold inparticular by the company Shin-Etsu under the reference KF-6017, andmixtures thereof.

Preferably, the composition comprises at least one silicone surfactantsuch as the C₈-C₂₂ alkyl dimethicone copolyols of formula (I). Moreadvantageously, said silicone surfactant is cetyl dimethicone copolyol,especially the product whose INCI name is Cetyl PEG/PPG-10/1Dimethicone, for instance the product sold under the name Abil EM-90 bythe company Evonik Goldschmidt.

Preferably, according to this embodiment, the composition also comprisesat least one cosurfactant chosen from polyol alkyl esters, preferablyfrom glycerol and/or sorbitan esters. Preferably, the cosurfactant ischosen from polyglyceryl-3 diisostearate, polyglyceryl-4 isostearate,sorbitan isostearate and sorbitan glyceryl isostearate, and mixturesthereof.

Preferably, the cosurfactant is polyglyceryl-4 isostearate, such as theproduct sold under the name Isolan GI 34 by the company Goldschmidt.

Advantageously, the content of surfactant(s) in the composition rangesfrom 0.2% to 10% by weight, or even from 0.5% to 7% by weight, relativeto the weight of the composition.

Mineral Thickener

The composition according to the invention may also comprise at leastone mineral thickener chosen from optionally modified clays andoptionally modified silicas, or mixtures thereof.

More particularly, the content of mineral thickener represents from 0.2%to 15% by weight, expressed as active material, and preferably from 0.5%to 7% by weight, relative to the weight of the composition.

In accordance with an advantageous embodiment of the invention, thecontent of mineral thickener is such that the weight ratio (expressed asactive material) of polymer particles/thickener ranges from 0.5 to 80,preferably from 5 to 50 and more particularly from 10 to 30.

i) Optionally Modified Clays

Clays are silicates containing a cation that may be chosen from calcium,magnesium, aluminium, sodium, potassium and lithium cations, andmixtures thereof.

Examples of such products that may be mentioned include clays of thesmectite family, and also of the vermiculite, stevensite and chloritefamilies. These clays can be of natural or synthetic origin.

Mention may more particularly be made of smectites, such as saponites,hectorites, montmorillonites, bentonites or beidellite and in particularsynthetic hectorites (also known as laponites), such as the productssold by Laporte under the names Laponite XLG, Laponite RD and LaponiteRDS (these products are sodium magnesium silicates and in particularsodium lithium magnesium silicates); bentonites, such as the productsold under the name Bentone HC by Rheox; magnesium aluminium silicates,which are in particular hydrated, such as the products sold byVanderbilt Company under the name Veegum Ultra, Veegum HS or Veegum DGT,or also calcium silicates and in particular that in synthetic form soldby the company under the name Micro-Cel C.

Preferably, use is made of organophilic clays, more particularlymodified clays, such as montmorillonite, bentonite, hectorite,attapulgite and sepiolite, and mixtures thereof. The clay is preferablya bentonite or a hectorite.

These clays are modified with a chemical compound chosen from quaternaryamines, tertiary amines, amine acetates, imidazolines, amine soaps,fatty sulfates, alkylarylsulfonates and amine oxides, and mixturesthereof.

Mention may thus be made of hectorites modified with a quaternary amine,more specifically with a C₁₀ to C₂₂ fatty acid ammonium halide, such asa chloride, such as hectorite modified with distearyldimethylammoniumchloride (CTFA name: Disteardimonium hectorite), for instance theproduct sold under the name Bentone 38V®, Bentone 38V CG or Bentone EWCE by the company Elementis, or stearalkonium hectorites, such asBentone 27 V.

Mention may also be made of quaternium-18 bentonites, such as those soldunder the names Bentone 34 by the company Elementis, Tixogel VP by thecompany United Catalyst and Claytone 40 by the company Southern Clay;stearalkonium bentonites, such as those sold under the names Tixogel LGby the company United Catalyst and Claytone AF and Claytone APA by thecompany Southern Clay; or quaternium-18/benzalkonium bentonites, such asthat sold under the name Claytone HT by the company Southern Clay.

According to a preferred embodiment, the thickener is chosen fromorganophilic modified clays, in particular organophilic modifiedhectorites, in particular modified with benzyldimethylammonium stearatechloride or with distearyldimethylammonium chloride.

In accordance with one variant of the invention, the content ofoptionally modified clay ranges from 0.2% to 10% by weight relative tothe weight of the composition, and preferably from 0.5% to 5% by weightrelative to the weight of the composition. These percentages areexpressed as active material.

ii) Optionally Modified Silicas

Mention may also be made of fumed silica optionally subjected to ahydrophobic surface treatment, the particle size of which is less than 1μm. Specifically, it is possible to chemically modify the surface of thesilica, by chemical reaction generating a reduced number of silanolgroups present at the surface of the silica. It is especially possibleto substitute silanol groups with hydrophobic groups: a hydrophobicsilica is then obtained. The hydrophobic groups may be:

-   -   trimethylsiloxyl groups, which are obtained especially by        treating fumed silica in the presence of hexamethyldisilazane.        Silicas thus treated are known as “Silica silylate” according to        the CTFA (6th edition, 1995). They are sold, for example, under        the references Aerosil R812® by the company Degussa, and        Cab-O-Sil TS-530® by the company Cabot;    -   dimethylsilyloxyl or polydimethylsiloxane groups, which are        obtained in particular by treating fumed silica in the presence        of polydimethylsiloxane or dimethyldichlorosilane. Silicas thus        treated are known as “Silica dimethyl silylate” according to the        CTFA (6th edition, 1995). They are sold, for example, under the        references Aerosil R972® and Aerosil R974® by the company        Degussa, and Cab-O-Sil TS-610® and Cab-O-Sil TS-720® by the        company Cabot.

The hydrophobic fumed silica in particular has a particle size that maybe nanometric to micrometric, for example ranging from about 5 to 200nm.

The composition according to the invention may comprise or comprises atleast silica aerogel particles.

Silica aerogels are porous materials obtained by replacing (by drying)the liquid component of a silica gel with air.

They are generally synthesized via a sol-gel process in a liquid mediumand then dried, usually by extraction with a supercritical fluid, theone most commonly used being supercritical CO₂. This type of dryingmakes it possible to avoid shrinkage of the pores and of the material.The sol-gel process and the various drying processes are described indetail in Brinker C J., and Scherer G. W., Sol-Gel Science: New York:Academic Press, 1990.

The hydrophobic silica aerogel particles used in the present inventionhave a specific surface area per unit mass (S_(M)) ranging from 500 to1500 m²/g, preferably from 600 to 1200 m²/g and better still from 600 to800 m²/g, and a size expressed as the volume mean diameter (D[0.5])ranging from 1 to 1500 μm, better still from 1 to 1000 μm, preferablyfrom 1 to 100 μm, in particular from 1 to 30 μm, more preferably from 5to 25 μm, better still from 5 to 20 μm and even better still from 5 to15 μm.

According to one embodiment, the hydrophobic silica aerogel particlesused in the present invention have a size expressed as volume-meandiameter (D[0.5]) ranging from 1 to 30 μm, preferably from 5 to 25 μm,better still from 5 to 20 μm and even better still from 5 to 15 μm.

The specific surface area per unit mass may be determined by thenitrogen absorption method, known as the BET (Brunauer-Emmett-Teller)method, described in The Journal of the American Chemical Society, vol.60, page 309, February 1938 and corresponding to international standardISO 5794/1 (appendix D). The BET specific surface area corresponds tothe total specific surface area of the particles under consideration.

The sizes of the silica aerogel particles may be measured by staticlight scattering using a commercial particle size analyser such as theMasterSizer 2000 machine from Malvern. The data are processed on thebasis of the Mie scattering theory. This theory, which is exact forisotropic particles, makes it possible to determine, in the case ofnon-spherical particles, an “effective” particle diameter. This theoryis especially described in the publication by Van de Hulst, H. C., LightScattering by Small Particles, Chapters 9 and 10, Wiley, New York, 1957.

According to an advantageous embodiment, the hydrophobic silica aerogelparticles used in the present invention have a specific surface area perunit mass (S_(M)) ranging from 600 to 800 m²/g and a size expressed asthe volume mean diameter (D[0.5]) ranging from 5 to 20 μm and evenbetter still from 5 to 15 μm.

The silica aerogel particles used in the present invention canadvantageously exhibit a tapped density a ranging from 0.02 g/cm³ to0.10 g/cm³, preferably from 0.03 g/cm³ to 0.08 g/cm³ and preferably from0.05 g/cm³ to 0.08 g/cm³.

In the context of the present invention, this density, known as thetapped density, may be assessed according to the following protocol:

40 g of powder are poured into a measuring cylinder; the measuringcylinder is then placed on a Stay 2003 machine from Stampf Volumeter;the measuring cylinder is then subjected to a series of 2500 tappingactions (this operation is repeated until the difference in volumebetween two consecutive tests is less than 2%); the final volume Vf oftapped powder is then measured directly on the measuring cylinder. Thetapped density is determined by the ratio m/Vf, in this instance 40/Vf(Vf being expressed in cm³ and m in g).

According to a preferred embodiment, the hydrophobic silica aerogelparticles used in the present invention have a specific surface area perunit of volume S_(V) ranging from 5 to 60 m²/cm³, preferably from 10 to50 m²/cm³ and better still from 15 to 40 m²/cm³.

The specific surface area per unit of volume is given by therelationship: S_(V)=S_(M)×σ, where σ is the tapped density, expressed ing/cm³, and S_(M) is the specific surface area per unit mass, expressedin m²/g, as defined above.

Preferably, the hydrophobic silica aerogel particles according to theinvention have an oil-absorbing capacity, measured at the wet point,ranging from 5 to 18 ml/g, preferably from 6 to 15 ml/g and better stillfrom 8 to 12 ml/g.

The absorbing capacity measured at the wet point, noted Wp, correspondsto the amount of oil that needs to be added to 100 g of particles inorder to obtain a homogeneous paste.

It is measured according to what is known as the wet point method or themethod for determining the oil uptake of a powder described in standardNF T 30-022. It corresponds to the amount of oil adsorbed onto theavailable surface of the powder and/or absorbed by the powder bymeasurement of the wet point, described below:

An amount m=2 g of powder is placed on a glass plate, and the oil(isononyl isononanoate) is then added dropwise. After addition of 4 to 5drops of oil to the powder, mixing is carried out using a spatula, andaddition of oil is continued until conglomerates of oil and powder haveformed. From this point, the oil is added at the rate of one drop at atime and the mixture is subsequently triturated with the spatula. Theaddition of oil is stopped when a firm, smooth paste is obtained. Thispaste must be able to be spread on the glass plate without cracking orforming lumps. The volume Vs (expressed in ml) of oil used is thennoted.

The oil uptake corresponds to the ratio Vs/m.

The aerogels used according to the present invention are hydrophobicsilica aerogels, preferably of silyl silica (INCI name: silicasilylate).

The term “hydrophobic silica” means any silica whose surface is treatedwith silylating agents, for example halogenated silanes such asalkylchlorosilanes, siloxanes, in particular dimethylsiloxanes such ashexamethyldisiloxane, or silazanes, so as to functionalize the OH groupswith silyl groups Si—Rn, for example trimethylsilyl groups.

As regards the preparation of hydrophobic silica aerogel particles thathave been surface-modified by silylation, reference may be made todocument U.S. Pat. No. 7,470,725.

Use will preferably be made of hydrophobic silica aerogel particlessurface-modified with trimethylsilyl groups.

As hydrophobic silica aerogels that may be used in the invention,examples that may be mentioned include the aerogel sold under the nameVM-2260 (INCI name: Silica silylate), by the company Dow Corning, theparticles of which have a mean size of about 1000 microns and a specificsurface area per unit of mass ranging from 600 to 800 m²/g.

Mention may also be made of the aerogels sold by the company Cabot underthe references Aerogel TLD 201, Aerogel OGD 201, Aerogel TLD 203, Enova®Aerogel MT 1100 and Enova Aerogel MT 1200.

Use will preferably be made of the aerogel sold under the name VM-2270(INCI name: Silica silylate) by the company Dow Corning, the particlesof which have an average size ranging from 5-15 microns and a specificsurface area per unit of mass ranging from 600 to 800 m²/g.

Preferably, when the composition comprises at least one thickener chosenfrom optionally modified silicas, these silicas are chosen fromhydrophobic silica aerogel particles.

In accordance with one variant of the invention, the content ofoptionally modified silica ranges from 0.5% to 15% by weight andpreferably from 1% to 7% by weight relative to the weight of thecomposition. These values are expressed as weight of active material.

Preferably, the mineral thickeners are chosen from lipophilic(organophilic) clays, in particular modified hectorites;hydrophobic-treated fumed silica; hydrophobic silica aerogels, ormixtures thereof.

Preferably, the composition comprises at least one organophilic modifiedclay or at least one hydrophobic modified silica, in particularhydrophobic silica aerogels.

Block Hydrocarbon-Based Copolymer

As indicated previously, the composition according to the inventioncomprises at least one hydrocarbon-based copolymer bearing amorphousblocks, obtained by polymerization of at least one monomer ofunsaturated hydrocarbon type comprising 2 to 5 carbon atoms andcontaining one or two ethylenic unsaturations.

These block hydrocarbon-based copolymers are preferably soluble ordispersible in the oily phase.

They may especially be of diblock, triblock, multiblock, radial orstarburst type, or mixtures thereof.

Such block hydrocarbon-based copolymers are described, for example, inpatent application US 2002/005 562 and in U.S. Pat. No. 5,221,534.

The copolymer may contain at least one block whose glass transitiontemperature is preferably less than 20° C., preferably less than orequal to 0° C., preferably less than or equal to −20° C. and morepreferably less than or equal to −40° C. The glass transitiontemperature of said block may be between −150° C. and 20° C., especiallybetween −100° C. and 0° C.

The term “amorphous polymer” means a polymer which has no crystallineform.

The monomer of unsaturated hydrocarbon type comprising 2 to 5 carbonatoms and having one or two ethylenic unsaturations may especially be anelastomeric ethylenically unsaturated monomer.

As examples of monomers of unsaturated hydrocarbon type comprising 2 to5 unsaturated carbon atoms, mention may be made of ethylene, propylene,butadiene, isoprene or pentadiene.

Advantageously, the block hydrocarbon-based copolymer is an amorphousblock copolymer of styrene and of hydrocarbon monomer(s) comprising 2 to5 carbon atoms and comprising one or two ethylenic unsaturations.

Block copolymers comprising at least one styrene block and at least oneblock comprising units chosen from butadiene, ethylene, propylene,butylene and isoprene or a mixture thereof are especially preferred.

According to a preferred embodiment, the block hydrocarbon-basedcopolymer is hydrogenated to reduce the residual ethylenic unsaturationsafter polymerization of the monomers.

In particular, the block hydrocarbon-based copolymer is an optionallyhydrogenated copolymer bearing styrene blocks and ethylene/C₃-C₄alkylene blocks or isoprene blocks.

According to a preferred embodiment, the composition according to theinvention comprises at least one diblock copolymer, which is preferablyhydrogenated, preferably chosen from styrene-ethylene/propylenecopolymers, styrene-ethylene/butadiene copolymers,styrene-ethylene/butylene copolymers and styrene-isoprene copolymers.Diblock polymers are especially sold under the name Kraton® G1701E bythe company Kraton Polymers.

According to another preferred embodiment, the composition according tothe invention comprises at least one triblock copolymer, which ispreferably hydrogenated, preferably chosen fromstyrene-ethylene/propylene-styrene copolymers,styrene-ethylene/butadiene-styrene copolymers, styrene-isoprene-styrenecopolymers and styrene-butadiene-styrene copolymers. Triblock polymersare especially sold under the names Kraton® G1650, Kraton® D1101,Kraton® D1102 and Kraton® D1160 by the company Kraton Polymers.

According to one embodiment of the present invention, thehydrocarbon-based block copolymer is a styrene-ethylene/butylene-styrenetriblock copolymer.

According to a preferred embodiment of the invention, use may be madeespecially of a mixture of a styrene-butylene/ethylene-styrene triblockcopolymer and of a styrene-ethylene/butylene diblock copolymer,especially those sold under the name Kraton® G1657M by the companyKraton Polymers.

According to another preferred embodiment, the composition according tothe invention comprises a mixture of hydrogenatedstyrene-butylene/ethylene-styrene triblock copolymer and of hydrogenatedethylene-propylene-styrene starburst polymer, such a mixture possiblybeing especially in isododecane or in another oil. Such mixtures aresold, for example, by the company Penreco under the trade namesVersagel® M5960 and Versagel® M5670.

Advantageously, a diblock copolymer such as those described previouslyis used as block hydrocarbon-based copolymer, in particular astyrene-ethylene/propylene diblock copolymer, or a mixture of diblockand triblock, as described previously, such as mixture of astyrene-butylene/ethylene-styrene triblock copolymer and of astyrene-ethylene/butylene diblock copolymer.

The block hydrocarbon-based copolymer(s) may be present in a contentranging from 2.5% to 15% by weight, relative to the total weight of thecomposition, preferably ranging from 2.5% to 8% by weight, relative tothe total weight of the composition.

Additional Silicone Oils

The composition according to the invention may also comprise at leastone additional volatile or non-volatile silicone oil.

The term “silicone oil” means an oil containing at least one siliconatom, and especially containing Si—O groups.

As additional volatile silicone oils that are suitable for use, examplesthat may be mentioned include volatile linear or cyclic silicone oils,especially those with a viscosity≦8 centistokes (8×10⁻⁶ m²/s) andespecially containing from 2 to 7 silicon atoms, these siliconesoptionally comprising alkyl or alkoxy groups containing from 1 to 10carbon atoms.

As volatile silicone oils that may be used, mention may be madeespecially of octamethylcyclotetrasiloxane, cyclopentadimethylsiloxane,decamethylcyclopenta-siloxane, dodecamethylcyclohexasiloxane,heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane,hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane anddodecamethylpentasiloxane, and mixtures thereof.

As non-volatile silicone oils, mention may be made of non-phenylnon-volatile silicone oils, for instance polydimethylsiloxanes (PDMS),PDMSs comprising aliphatic groups, in particular alkyl or alkoxy, whichare pendent and/or at the end of the silicone chain; these groups eachcomprising from 2 to 24 carbon atoms. An example that may be mentionedis cetyl dimethicone sold under the commercial reference Abil Wax 9801from Evonik Goldschmidt.

Non-volatile phenyl silicone oils optionally comprising one or moredimethicone fragments (—(CH3)2-SiO—) are also suitable for use, forinstance phenyl trimethicones, phenyl dimethicones,phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones andtrimethylpentaphenyltrisiloxane, and mixtures thereof.

If the composition comprises any, the content of additional siliconeoil(s) is between 1% and 15% by weight relative to the weight of thecomposition.

Preferably, the composition does not comprise more than 10% by weightand preferably not more than 5% by weight of additional non-volatileoil, relative to the weight of the composition.

Waxes

The composition according to the invention may optionally comprise atleast one wax.

For the purposes of the present invention, the term “wax” means alipophilic compound, which is solid at room temperature (25° C.), with areversible solid/liquid change of state, which has a melting point ofgreater than or equal to 30° C. that may be up to 120° C.

The melting point of the wax may be measured using a differentialscanning calorimeter (DSC), for example the calorimeter sold under thename DSC 30 by the company Mettler.

The waxes may be hydrocarbon-based waxes, fluoro waxes and/or siliconewaxes, and may be of plant, mineral, animal and/or synthetic origin. Inparticular, the waxes have a melting point of greater than 25° C. andbetter still greater than 45° C.

Hydrocarbon-based waxes, for instance beeswax, lanolin wax or Chineseinsect waxes; rice wax, carnauba wax, candelilla wax, ouricury wax,esparto grass wax, cork fibre wax, sugar cane wax, Japan wax and sumacwax; montan wax, microcrystalline waxes, paraffins and ozokerite;polyethylene waxes, the waxes obtained by Fisher-Tropsch synthesis andwaxy copolymers, and also esters thereof, may especially be used.

Mention may also be made of waxes obtained by catalytic hydrogenation ofanimal or plant oils containing linear or branched C₈-C₃₂ fatty chains.

Among these waxes that may in particular be mentioned are hydrogenatedjojoba oil, isomerized jojoba oil such as the trans-isomerized partiallyhydrogenated jojoba oil manufactured or sold by the company Desert Whaleunder the commercial reference Iso-Jojoba-500, hydrogenated sunfloweroil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenatedlanolin oil and bis(1,1,1-trimethylolpropane) tetrastearate sold underthe name Hest 2T-4S by the company Heterene,bis(1,1,1-trimethylolpropane) tetrabehenate sold under the name Hest2T-4B by the company Heterene.

Mention may also be made of silicone waxes, for instance alkyl or alkoxydimethicones containing from 16 to 45 carbon atoms,polypropylsilsesquioxane waxes (as described in patent WO 2005/100444),in particular with the C₃₀-C₄₅ alkyldimethylsilylpolypropylsilsesquioxane compound commercially available from DowCorning under the brand name SW-8005 C30 Resin Wax; fluoro waxes, andpreferably silicone-based waxes.

The wax obtained by hydrogenation of olive oil esterified with thestearyl alcohol, sold under the name Phytowax Olive 18 L 57 or else thewaxes obtained by hydrogenation of castor oil esterified with cetylalcohol, sold under the names Phytowax Castor 16L64 and 22L73 by thecompany Sophim, may also be used. Such waxes are described in patentapplication FR-A-2 792 190.

If the composition comprises one or more waxes, their content representsfrom 0.4% to 20% by weight relative to the weight of the composition,and preferably from 0.5% to 5% by weight relative to the weight of thecomposition.

Pigments

The term “pigments” should be understood as meaning white or coloured,inorganic (mineral) or organic particles, which are insoluble in theliquid organic phase, and which are intended to colour and/or opacifythe composition and/or the deposit produced with the composition.

The pigments may be chosen from mineral pigments, organic pigments andcomposite pigments (i.e. pigments based on mineral and/or organicmaterials).

The pigments may be chosen from monochromatic pigments, lakes andpigments with an optical effect, for instance goniochromatic pigmentsand nacres.

If the composition comprises any, their content ranges from 0.1% to 10%by weight relative to the weight of the composition, and preferably from0.5% to 7% by weight relative to the weight of the composition.

The mineral pigments may be chosen from metal oxide pigments, chromiumoxides, iron oxides (black, yellow, red), titanium dioxide, zinc oxides,cerium oxides, zirconium oxides, chromium hydrate, manganese violet,Prussian blue, ultramarine blue, ferric blue, metal powders such asaluminium powders and copper powder, and mixtures thereof.

Organic lakes are organic pigments formed from a dye attached to asubstrate.

The lakes, which are also known as organic pigments, may be chosen fromthe materials below, and mixtures thereof:

-   -   cochineal carmine;    -   organic pigments of azo dyes, anthraquinone dyes, indigoid dyes,        xanthene dyes, pyrene dyes, quinoline dyes, triphenylmethane        dyes or fluoran dyes.

Among the organic pigments that may in particular be mentioned are thoseknown under the following names: D&C Blue No. 4, D&C Brown No. 1, D&CGreen No. 5, D&C Green No. 6, D&C Orange No. 4, D&C Orange No. 5, D&COrange No. 10, D&C Orange No. 11, D&C Red No. 6, D&C Red No. 7, D&C RedNo. 17, D&C Red No. 21, D&C Red No. 22, D&C Red No. 27, D&C Red No. 28,D&C Red No. 30, D&C Red No. 31, D&C Red No. 33, D&C Red No. 34, D&C RedNo. 36, D&C Violet No. 2, D&C Yellow No. 7, D&C Yellow No. 8, D&C YellowNo. 10, D&C Yellow No. 11, FD&C Blue No. 1, FD&C Green No. 3, FD&C RedNo. 40, FD&C Yellow No. 5, FD&C Yellow No. 6;

-   -   the organic lakes may be insoluble sodium, potassium, calcium,        barium, aluminium, zirconium, strontium or titanium salts of        acidic dyes such as azo, anthraquinone, indigoid, xanthene,        pyrene, quinoline, triphenylmethane or fluoran dyes, these dyes        possibly comprising at least one carboxylic or sulfonic acid        group.

The organic lakes may also be supported on an organic support such asrosin or aluminium benzoate, for example.

Among the organic lakes, mention may be made in particular of thoseknown under the following names: D&C Red No. 2 Aluminium lake, D&C RedNo. 3 Aluminium lake, D&C Red No. 4 Aluminium lake, D&C Red No. 6Aluminium lake, D&C Red No. 6 Barium lake, D&C Red No. 6Barium/Strontium lake, D&C Red No. 6 Strontium lake, D&C Red No. 6Potassium lake, D&C Red No. 7 Aluminium lake, D&C Red No. 7 Barium lake,D&C Red No. 7 Calcium lake, D&C Red No. 7 Calcium/Strontium lake, D&CRed No. 7 Zirconium lake, D&C Red No. 8 Sodium lake, D&C Red No. 9Aluminium lake, D&C Red No. 9 Barium lake, D&C Red No. 9Barium/Strontium lake, D&C Red No. 9 Zirconium lake, D&C Red No. 10Sodium lake, D&C Red No. 19 Aluminium lake, D&C Red No. 19 Barium lake,D&C Red No. 19 Zirconium lake, D&C Red No. 21 Aluminium lake, D&C RedNo. 21 Zirconium lake, D&C Red No. 22 Aluminium lake, D&C Red No. 27Aluminium lake, D&C Red No. 27 Aluminium/Titanium/Zirconium lake, D&CRed No. 27 Barium lake, D&C Red No. 27 Calcium lake, D&C Red No. 27Zirconium lake, D&C Red No. 28 Aluminium lake, D&C Red No. 30 lake, D&CRed No. 31 Calcium lake, D&C Red No. 33 Aluminium lake, D&C Red No. 34Calcium lake, D&C Red No. 36 lake, D&C Red No. 40 Aluminium lake, D&CBlue No. 1 Aluminium lake, D&C Green No. 3 Aluminium lake, D&C OrangeNo. 4 Aluminium lake, D&C Orange No. 5 Aluminium lake, D&C Orange No. 5Zirconium lake, D&C Orange No. 10 Aluminium lake, D&C Orange No. 17Barium lake, D&C Yellow No. 5 Aluminium lake, D&C Yellow No. 5 Zirconiumlake, D&C Yellow No. 6 Aluminium lake, D&C Yellow No. 7 Zirconium lake,D&C Yellow No. 10 Aluminium lake, FD&C Blue No. 1 Aluminium lake, FD&CRed No. 4 Aluminium lake, FD&C Red No. 40 Aluminium lake, FD&C YellowNo. 5 Aluminium lake, FD&C Yellow No. 6 Aluminium lake.

Mention may also be made of liposoluble dyes, such as, for example,Sudan Red, DC Red 17, DC Green 6, β-carotene, soybean oil, Sudan Brown,DC Yellow 11, DC Violet 2, DC Orange 5 and quinoline yellow.

The chemical materials corresponding to each of the organic dyestuffsmentioned previously are mentioned in the publication “InternationalCosmetic Ingredient Dictionary and Handbook”, 1997 edition, pages 371 to386 and 524 to 528, published by The Cosmetic, Toiletries and FragranceAssociation, the content of which is incorporated into the presentpatent application by reference.

The pigments may also have been subjected to a hydrophobic treatment.

The hydrophobic treatment agent may be chosen from silicones such asmethicones, dimethicones, alkoxysilanes and perfluoroalkylsilanes; fattyacids such as stearic acid; metal soaps such as aluminium dimyristate,the aluminium salt of hydrogenated tallow glutamate, perfluoroalkylphosphates, perfluoroalkylsilanes, perfluoroalkylsilazanes,polyhexafluoropropylene oxides, polyorganosiloxanes comprisingperfluoroalkyl perfluoropolyether groups and amino acids; N-acylaminoacids or salts thereof; lecithin, isopropyl triisostearyl titanate, andmixtures thereof.

The N-acylamino acids may comprise an acyl group containing from 8 to 22carbon atoms, for instance a 2-ethylhexanoyl, caproyl, lauroyl,myristoyl, palmitoyl, stearoyl or cocoyl group. The salts of thesecompounds may be the aluminium, magnesium, calcium, zirconium, zinc,sodium or potassium salts. The amino acid may be, for example, lysine,glutamic acid or alanine.

The term “alkyl” mentioned in the compounds cited above especiallydenotes an alkyl group containing from 1 to 30 carbon atoms andpreferably containing from 5 to 16 carbon atoms.

Hydrophobic-treated pigments are described especially in patentapplication EP-A-1 086 683.

Nacres

For the purposes of the present patent application, the term “nacre”means coloured particles of any form, which may or may not beiridescent, in particular produced by certain molluscs in their shell,or alternatively synthesized, and which have a colour effect via opticalinterference.

Examples of nacres that may be mentioned include nacreous pigments suchas titanium mica coated with an iron oxide, mica coated with bismuthoxychloride, titanium mica coated with chromium oxide, titanium micacoated with an organic dye in particular of the abovementioned type, andalso nacreous pigments based on bismuth oxychloride.

They may also be mica particles, at the surface of which are superposedat least two successive layers of metal oxides and/or of organicdyestuffs.

The nacres may more particularly have a yellow, pink, red, bronze,orange, brown, gold and/or coppery colour or glint.

As illustrations of nacres that may be introduced as interferencepigments into the first composition, mention may be made of thegold-coloured nacres sold in particular by the company BASF under thename Brilliant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold(Timica) and Monarch gold 233X (Cloisonne); the bronze nacres sold inparticular by the company Merck under the name Bronze fine (17384)(Colorona) and Bronze (17353) (Colorona) and by the company BASF underthe name Super bronze (Cloisonne); the orange nacres sold in particularby the company BASF under the name Orange 363C (Cloisonne) and by thecompany Merck under the name Passion orange (Colorona) and Matte orange(17449) (Microna); the brown tinted nacres sold in particular by thecompany Engelhard under the name Nu-antique copper 340XB (Cloisonne) andBrown CL4509 (Chroma-lite); the copper-tinted nacres sold in particularby the company BASF under the name Copper 340A (Timica); the red-tintednacres sold in particular by the company Merck under the name Siennafine (17386) (Colorona); the yellow-tinted nacres sold in particular bythe company BASF under the name Yellow (4502) (Chromalite); thegold-tinted red nacres sold in particular by the company BASF under thename Sunstone G012 (Gemtone); the pink nacres sold in particular by thecompany BASF under the name Tan opal G005 (Gemtone); the gold-tintedblack nacres sold in particular by the company BASF under the name Nuantique bronze 240 AB (Timica), the blue nacres sold in particular bythe company Merck under the name Matte blue (17433) (Microna), thesilvery-tinted white nacres sold in particular by the company Merckunder the name Xirona Silver, and the golden-green pink-orange nacressold in particular by the company Merck under the name Indian summer(Xirona), and mixtures thereof.

Goniochromatic Pigments

For the purposes of the present invention, the term “goniochromaticpigment” denotes a pigment which makes it possible to obtain, when thecomposition is spread onto a support, a colour path in the a*b* plane ofthe CIE 1976 colorimetric space that corresponds to a variation Dh° inthe hue angle h° of at least 20° when the angle of observation relativeto the normal is varied between 0° and 80°, for an incident light angleof 45°.

The colour path may be measured, for example, using an InstrumentSystems brand spectrogonioreflectometer of reference GON 360 Goniometer,after the composition has been spread in fluid form to a thickness of300 μm using an automatic spreader onto an Erichsen brand contrast cardof reference Typ 24/5, the measurement being taken on the blackbackground of the card.

The goniochromatic pigment may be chosen, for example, from multilayerinterference structures and liquid-crystal colouring agents.

In the case of a multilayer structure, it may comprise, for example, atleast two layers, each layer being made, for example, from at least onematerial chosen from the group consisting of the following materials:MgF₂, CeF₃, ZnS, ZnSe, Si, SiO₂, Ge, Te, Fe₂O₃, Pt, Va, Al₂O₃, MgO,Y₂O₃, S₂O₃, SiO, HfO₂, ZrO₂, CeO₂, Nb₂O₅, Ta₂O₅, TiO₂, Ag, Al, Au, Cu,Rb, Ti, Ta, W, Zn, MoS₂, cryolite, and alloys, polymers and combinationsthereof.

The multilayer structure may or may not have, relative to a centrallayer, symmetry in the chemical nature of the stacked layers.

Different effects are obtained depending on the thickness and the natureof the various layers.

Examples of symmetrical multilayer interference structures are, forexample, the following structures: Fe₂O₃/SiO₂/Fe₂O₃/SiO₂/Fe₂O₃, apigment having this structure being sold under the name Sicopearl by thecompany BASF; MoS₂/SiO₂/mica-oxide/SiO₂/MoS₂;Fe₂O₃/SiO₂/mica-oxide/SiO₂/Fe₂O₃; TiO₂/SiO₂/TiO₂ and TiO₂/Al₂O₃/TiO₂,pigments having these structures being sold under the name Xirona by thecompany Merck.

The liquid-crystal colouring agents comprise, for example, silicones orcellulose ethers onto which are grafted mesomorphic groups. Examples ofliquid-crystal goniochromatic particles that may be used include, forexample, those sold by the company Chenix and also the products soldunder the name Helicone® HC by the company Wacker.

Goniochromatic pigments that may also be used include certain nacres,pigments with effects on a synthetic substrate, especially a substratesuch as alumina, silica, borosilicate, iron oxide or aluminium, orinterference flakes obtained from a polyterephthalate film.

Non-limiting examples of goniochromatic pigments that may be mentionedin particular, alone or as mixtures, include the goniochromatic pigmentsSunShine® sold by Sun, Cosmicolor Celeste® from Toyo Aluminium K.K.,Xirona® from Merck and Reflecks Multidimensions® from BASF.

These particles may optionally comprise or be covered with opticalbrightener(s) (or white organic fluorescent substances).

Optical brighteners are compounds well known to a person skilled in theart. Such compounds are described in “Fluorescent Whitening Agent,Encyclopedia of Chemical Technology, Kirk-Othmer”, vol. 11, pp. 227-241,4th Edition, 1994, Wiley.

Their use in cosmetics in particular exploits the fact that they consistof chemical compounds having fluorescence properties, which absorb inthe ultraviolet region (maximum absorption at a wavelength of less than400 nm) and re-emit energy by fluorescence for a wavelength of between380 nm and 830 nm. They may be defined more particularly as compoundsthat absorb essentially in the UVA region between 300 and 390 nm andre-emit essentially between 400 and 525 nm. Their lightening effect isbased more particularly on an emission of energy between 400 and 480 nm,which corresponds to an emission in the blue part of the visible region,which contributes to lightening the skin visually when this emissiontakes place on the skin.

Optical brighteners that are especially known include stilbenederivatives, in particular polystyrylstilbenes and triazinylstilbenes,coumarin derivatives, in particular hydroxycoumarins and aminocoumarins,oxazole, benzoxazole, imidazole, triazole and pyrazoline derivatives,pyrene derivatives, porphyrin derivatives and mixtures thereof.

The optical brighteners that may be used may also be in the form ofcopolymers, for example of acrylates and/or methacrylates, grafted withoptical brightener groups as described in patent application FR 9910942.

Additional Fillers

The term “fillers” should be understood as meaning colourless or whitesolid particles of any form, which are in a form that is insoluble anddispersed in the medium of the composition, and are of mineral ororganic nature.

In the present patent application, “mineral filler” is understood tomean any mineral solid that is insoluble in the medium at roomtemperature (25° C.).

The term “mineral” refers to any compound or polymer whose chemicalstructure does not comprise any carbon atoms.

The fillers may or may not be surface-coated, and in particular they maybe surface-treated with silicones, amino acids, fluoro derivatives orany other substance that promotes the dispersion and compatibility ofthe filler in the composition.

Such fillers are distinct from the mineral thickeners and also from thecolouring agents described previously.

The fillers may be spherical, i.e. they may comprise at least a roundedgeneral portion, preferably defining at least a sphere portion,preferably internally defining a concavity or a hollow (sphere,globules, bowls, horseshoe, and the like), or lamellar.

Such fillers are advantageously chosen from:

-   -   silica powders, such as the porous silica microspheres sold        under the name Silica Beads SB-700 by the company Miyoshi or        Sunsphere® H51 or Sunsphere® H33 by the company Asahi Glass; or        the polydimethylsiloxane-coated amorphous silica microspheres        sold under the name SA Sunsphere® H33 or SA Sunsphere® H-53 by        the company Asahi Glass,    -   acrylic (co)polymer powders and derivatives thereof, in        particular:    -   the polymethyl methacrylate powder sold under the names        Covabead® LH85 by the company Wackher or Microsphere M-100® by        the company Matsumoto,    -   the polymethyl methacrylate/ethylene glycol dimethacrylate        powder sold under the name Dow Corning 5640 Microsponge® Skin        Oil Adsorber by the company Dow Corning or Ganzpearl® GMP-0820        by the company Ganz Chemical,    -   the polyallyl methacrylate/ethylene glycol dimethacrylate powder        sold under the name Poly-Pore® L200 or Poly-Pore® E200 by the        company Amcol Health and Beauty Solutions Inc.,    -   the ethylene glycol dimethacrylate/lauryl methacrylate copolymer        powder sold under the name Polytrap® 6603 by the company Dow        Corning,    -   the optionally crosslinked acrylate/alkyl acrylate copolymer        crosslinked acrylate/ethylhexyl acrylate copolymer powder sold        under the name Techpolymer ACP-8C by the company Sekisui        Plastics,    -   the ethylene/acrylate copolymer powder, such as the product sold        under the name Flobeads® by the company Sumitomo Seika        Chemicals,    -   the expanded hollow particles of acrylonitrile (co)polymer sold        under the name Expancel by Expancel or the microspheres sold        under the name Micropearl F 80 ED® by the company Matsumoto,    -   the polyurethane powders sold, for example, under the names        Plastic Powder D-400, Plastic Powder CS-400, Plastic Powder        D-800 and Plastic Powder T-75 by the company Toshiki,    -   silicone powders advantageously chosen from:    -   polymethylsilsesquioxane powders, in particular those sold under        the name Tospearl, in particular Tospearl 145 A, by the company        Momentive Performance Materials,    -   organopolysiloxane elastomer powders coated with silicone resin,        especially with silsesquioxane resin, such as the products sold        under the name KSP-100, KSP-101, KSP-102, KSP-103, KSP-104 or        KSP-105 by the company Shin-Etsu (INCI name: vinyl        dimethicone/methicone silsesquioxane crosspolymer),    -   silicone elastomer powders, such as the products sold under the        name Trefil® Powder E-505C or Trefil® Powder E-506C by the        company Dow Corning,    -   powders of organosilicone particles, for example, in the form of        bowls, such as those described in JP-2003 128 788 or        JP-A-2000-191789 or also in patent application EP 1 579 841 and        sold especially by the company Takemoto Oil & Fat,    -   polyamide powders, such as Nylon® powders, in particular Nylon        12 powders, such as the nylon powders sold under the name        Orgasol® 2002 EXS NAT COS by the company Arkema,    -   powders of natural organic materials, such as polysaccharide        powders and in particular starch powders, especially crosslinked        or non-crosslinked corn, wheat or rice starch powders, powders        of starch crosslinked with octenylsuccinic anhydride sold under        the name Dry-Flo® by the company National Starch or powders of        waxy corn starch, such as those which are sold under the names        C* Gel 04201 by the company Cargill, Corn Starch B by the        company Roquette and Organic Corn Starch by the company Draco        Natural Products,    -   spherical cellulose microparticles, such as Cellulobeads D-10,        Cellulobeads D-5 and Cellulobeads USF, sold by the company Daito        Kasei Kogyo,    -   particles of N—(C₈-C₂₂ carbon atom acylated) amino acids; the        amino acid may be, for example, lysine, glutamic acid or        alanine, preferably lysine, for example Amihope LL by the        company Ajinomoto or the product sold under the name Corum 5105        S by the company Corum,    -   Perlite powders, such as those sold by the company World        Minerals under the trade name Perlite P1430, Perlite P2550,        Perlite P2040 or OpTiMat™ 1430 OR or 2550 OR. Europerl EMP-2 and        Europerl 1 by the company Imerys,    -   zeolites, such as the products sold by the company Zeochem under        the names Zeoflair 300, Zeoflair 200, Zeoflair 100, X-Mol and        X-Mol MT,    -   calcium magnesium carbonate particles, such as those sold by the        company Imerys under the name Calcidol, by the company LCW        (Sensient) under the name Carbomat or by the company Omya under        the name Omyacare S 60-AV.

Use may also be made of talc particles, for example sold under the namesLuzenac Pharma M and UM by the company Imerys and Rose Talc and TalcSG-2000 by the company Nippon Talc; natural or synthetic mica particles,such as those sold under the names Mica M RP and Silk Mica by thecompany Merck, or the product sold under the name Sericite S-152-BC bythe company Miyoshi Kasei; calcium carbonate and magnesium hydrogencarbonate; hydroxyapatite; boron nitride; fluorphlogopite; and mixturesthereof.

The spherical fillers may be coated with a hydrophobic treatment agent.The hydrophobic treatment agent may be chosen from fatty acids, forinstance stearic acid; metal soaps, for instance aluminium dimyristate,the aluminium salt of hydrogenated tallow glutamate; amino acids;N-acylamino acids or salts thereof; lecithin, isopropyl triisostearyltitanate, and mixtures thereof. The N-acylamino acids may comprise anacyl group containing from 8 to 22 carbon atoms, for instance a2-ethylhexanoyl, caproyl, lauroyl, myristoyl, palmitoyl, stearoyl orcocoyl group. The salts of these compounds may be the aluminium,magnesium, calcium, zirconium, zinc, sodium or potassium salts. Theamino acid may be, for example, lysine, glutamic acid or alanine. Theterm “alkyl” mentioned in the compounds cited above especially denotesan alkyl group containing from 1 to 30 carbon atoms and preferablycontaining from 5 to 16 carbon atoms.

The composition advantageously has a content of additional filler(s) ofbetween 0.1% and 10% by weight, relative to the weight of thecomposition, preferably between 0.1% and 5% by weight and even morepreferably from 0.1% to 2.5% by weight relative to the weight of thecomposition.

Optional Additives

The composition may comprise at least one optional ingredient chosen,for example, from nonvolatile, hydrocarbon-based or silicone-based,polar or apolar oils; film-forming agents other than the stabilizedpolymer particles described previously; antioxidants; preserving agents;fragrances; flavourings; neutralizers; emollients; coalescers;moisturizers; vitamins, and mixtures thereof.

Needless to say, a person skilled in the art will take care to selectthe optional additional additives and/or the amount thereof such thatthe advantageous properties of the composition according to theinvention are not, or are not substantially, adversely affected by theenvisaged addition.

The compositions according to the invention are thus intended for caringfor and/or making up keratin materials, in particular the skin or thelips, and also keratin fibres especially such as the eyelashes or theeyebrows.

They advantageously contain a physiologically acceptable medium, inother words a medium that is compatible with the treated keratinmaterials.

A composition according to the invention may more particularly be acomposition for making up and/or caring for keratin materials, inparticular the lips.

According to a preferred embodiment, a composition of the invention isin liquid form.

The invention is illustrated in more detail in the following examples.

All the percentages of reagents described in the examples are weightpercentages.

EXAMPLES Synthesis Examples Example 1

In a first step, 1300 g of isododecane, 337 g of isobornyl acrylate, 28g of methyl acrylate and 3.64 g of tert-butyl peroxy-2-ethylhexanoate(Trigonox 21 S from Akzo) were placed in a reactor. The isobornylacrylate/methyl acrylate mass ratio is 92/8. The mixture was heated at90° C. under argon with stirring.

After 2 hours of reaction, 1430 g of isododecane were added to thereactor feedstock and the mixture was heated to 90° C.

In a second step, a mixture of 1376 g of methyl acrylate, 1376 g ofisododecane and 13.75 g of Trigonox 21 S were run in over 2 hours 30minutes, and the mixture was left to react for 7 hours. 3.3 liters ofisododecane were then added and part of the isododecane was evaporatedoff to obtain a solids content of 50% by weight.

A dispersion of methyl acrylate particles stabilized with a statisticalcopolymer stabilizer containing 92% isobornyl acrylate and 8% methylacrylate in isododecane was obtained.

The oily dispersion contains in total (stabilizer+particles) 80% methylacrylate and 20% isobornyl acrylate.

The polymer particles of the dispersion have a number-average size ofabout 160 nm.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Example 2

A dispersion of polymer in isododecane was prepared according to thepreparation method of Example 1, using:

Step 1: 275.5 g of isobornyl acrylate, 11.6 g of methyl acrylate, 11.6 gof ethyl acrylate, 2.99 g of Trigonox 21, 750 g of isododecane; followedby addition, after reaction, of 750 g of isododecane.

Step 2: 539.5 g of methyl acrylate, 539.5 g of ethyl acrylate, 10.8 g ofTrigonox 21S, 1079 g of isododecane. After reaction, addition of 2liters of isododecane and evaporation to obtain a solids content of 35%by weight.

A dispersion in isododecane of methyl acrylate/ethyl acrylate (50/50)copolymer particles stabilized with an isobornyl acrylate/methylacrylate/ethyl acrylate (92/4/4) statistical copolymer stabilizer wasobtained.

The oily dispersion contains in total (stabilizer+particles) 40% methylacrylate, 40% ethyl acrylate and 20% isobornyl acrylate.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Example 3

A dispersion of polymer in isododecane was prepared according to thepreparation method of Example 1, using:

Step 1: 315.2 g of isobornyl acrylate, 12.5 g of methyl acrylate, 12.5 gof ethyl acrylate, 3.4 g of Trigonox 21, 540 g of isododecane, 360 g ofethyl acetate; followed by addition, after reaction, of 540 g ofisododecane and 360 g of ethyl acetate.

Step 2: 303 g of methyl acrylate, 776 g of ethyl acrylate, 157 g ofacrylic acid, 11 g of Trigonox 21S, 741.6 g of isododecane and 494.4 gof ethyl acetate. After reaction, addition of 3 liters of anisododecane/ethyl acetate mixture (60/40 weight/weight) and totalevaporation of the ethyl acetate and partial evaporation of theisododecane to obtain a solids content of 44% by weight.

A dispersion in isododecane of methyl acrylate/ethyl acrylate/acrylicacid (24.5/62.8/12.7) copolymer particles stabilized with an isobornylacrylate/methyl acrylate/ethyl acrylate (92/4/4) statistical copolymerstabilizer was obtained.

The oily dispersion contains in total (stabilizer+particles) 10% acrylicacid, 20% methyl acrylate, 50% ethyl acrylate and 20% isobornylacrylate.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Example 4

A dispersion of polymer in isododecane was prepared according to thepreparation method of Example 1, using:

Step 1: 315.2 g of isobornyl acrylate, 12.5 g of methyl acrylate, 12.5 gof ethyl acrylate, 3.4 g of Trigonox 21, 540 g of isododecane, 360 g ofethyl acetate; followed by addition, after reaction, of 540 g ofisododecane and 360 g of ethyl acetate.

Step 2: 145 g of methyl acrylate, 934 g of ethyl acrylate, 157 g ofacrylic acid, 12.36 g of Trigonox 21 S, 741.6 g of isododecane and 494.4g of ethyl acetate. After reaction, addition of 3 liters of anisododecane/ethyl acetate mixture (60/40 weight/weight) and totalevaporation of the ethyl acetate and partial evaporation of theisododecane to obtain a solids content of 44% by weight.

A dispersion in isododecane of methyl acrylate/ethyl acrylate/acrylicacid (11.7/75.6/12.7) copolymer particles stabilized with an isobornylacrylate/methyl acrylate/ethyl acrylate (92/4/4) statistical copolymerstabilizer was obtained.

The oily dispersion contains in total (stabilizer+particles) 10% acrylicacid, 10% methyl acrylate, 60% ethyl acrylate and 20% isobornylacrylate.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Example 5

A dispersion of polymer in isododecane was prepared according to thepreparation method of Example 1, using:

Step 1: 48 g of isobornyl acrylate, 2 g of methyl acrylate, 2 g of ethylacrylate, 0.52 g of Trigonox 21, 57.6 g of isododecane, 38.4 g of ethylacetate; followed by addition, after reaction, of 540 g of isododecaneand 360 g of ethyl acetate.

Step 2: 98 g of methyl acrylate, 73 g of ethyl acrylate, 25 g of maleicanhydride, 1.96 g of Trigonox 21S, 50.4 g of isododecane and 33.60 g ofethyl acetate. After reaction, addition of 1 liter of anisododecane/ethyl acetate mixture (60/40 weight/weight) and totalevaporation of the ethyl acetate and partial evaporation of theisododecane to obtain a solids content of 46.2% by weight.

A dispersion in isododecane of methyl acrylate/ethyl acrylate/maleicanhydride (50/37.2/12.8) copolymer particles stabilized with anisobornyl acrylate/methyl acrylate/ethyl acrylate (92/4/4) statisticalcopolymer stabilizer was obtained.

The oily dispersion contains in total (stabilizer+particles) 10% maleicanhydride, 30% methyl acrylate, 40% ethyl acrylate and 20% isobornylacrylate.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Example 6

A dispersion of polymer in isododecane was prepared according to thepreparation method of Example 1, using:

Step 1: 48.5 g of isobornyl methacrylate, 4 g of methyl acrylate, 0.52 gof Trigonox 21, 115 g of isododecane; followed by addition, afterreaction, of 80 g of isododecane.

Step 2: 190 g of methyl acrylate, 1.9 g of Trigonox 21S, 190 g ofisododecane. After reaction, addition of 1 liter of isododecane andpartial evaporation of the isododecane to obtain a solids content of 48%by weight.

A dispersion in isododecane of methyl acrylate polymer particlesstabilized with an isobornyl methacrylate/methyl acrylate (92/8)statistical copolymer stabilizer was obtained.

The oily dispersion contains in total (stabilizer+particles) 80% methylacrylate and 20% isobornyl methacrylate.

The dispersion is stable after storage for 7 days at room temperature(25° C.).

Examples 7 and 8 (Invention) and 9 and 10 (Outside the Invention)

Several oily dispersions of polymethyl acrylate stabilized with astabilizer containing isobornyl acrylate and optionally methyl acrylatewere prepared, according to the procedure of Example 1, by varying themass ratio of isobornyl acrylate and methyl acrylate and observing thestability of the dispersion obtained as a function of the chemicalconstitution of the stabilizer.

All the dispersions comprise in total (stabilizer+particles) 80% methylacrylate and 20% isobornyl acrylate.

Example 7

Step 1: 50 g of isobornyl acrylate, 0.5 g Trigonox 21, 96 g ofisododecane; followed by addition, after reaction, of 80 g ofisododecane.

Step 2: 200 g of methyl acrylate, 2 g of Trigonox 21S, 200 g ofisododecane. After reaction, addition of 80 g of isododecane andevaporation to obtain a solids content of 31% by weight.

A dispersion in isododecane of polymethyl acrylate particles stabilizedwith a polyisobornyl acrylate stabilizer was obtained.

Example 8

Step 1: 48.5 g of isobornyl acrylate, 8.5 g of methyl acrylate, 0.57 gTrigonox 21, 115 g of isododecane; followed by addition, after reaction,of 75 g of isododecane.

Step 2: 185.5 g of methyl acrylate, 1.85 g of Trigonox 21S, 185.5 g ofisododecane. After reaction, addition of 75 g of isododecane andevaporation to obtain a solids content of 31% by weight.

A dispersion in isododecane of polymethyl acrylate particles stabilizedwith an isobornyl acrylate/methyl acrylate (85/15) statistical copolymerstabilizer was obtained.

Example 9 (Outside the Invention)

Step 1: 48.5 g of isobornyl acrylate, 12 g of methyl acrylate, 0.6 gTrigonox 21, 115 g of isododecane; followed by addition, after reaction,of 60 g of isododecane.

Step 2: 182 g of methyl acrylate, 1.82 g of Trigonox 21S, 182 g ofisododecane. After reaction, addition of 60 g of isododecane andevaporation to obtain a solids content of 31% by weight.

A dispersion in isododecane of polymethyl acrylate particles stabilizedwith an isobornyl acrylate/methyl acrylate (80/20) statistical copolymerstabilizer was obtained.

Example 10 (Outside the Invention)

Step 1: 48.5 g of isobornyl acrylate, 21 g of methyl acrylate, 0.7 gTrigonox 21, 130 g of isododecane; followed by addition, after reaction,of 65 g of isododecane.

Step 2: 173 g of methyl acrylate, 1.73 g of Trigonox 21S, 173 g ofisododecane. After reaction, addition of 65 g of isododecane andevaporation to obtain a solids content of 31% by weight.

A dispersion in isododecane of polymethyl acrylate particles stabilizedwith an isobornyl acrylate/methyl acrylate (70/30) statistical copolymerstabilizer was obtained.

The stability 12 hours after the end of synthesis of the oilydispersions of polymethyl acrylate of Examples 1 and 7 to 10 wascompared, and the following results were obtained.

Example Stabilizer Stability 1 92 isobornyl acrylate/ Stable 8 methylacrylate 7 100 isobornyl acrylate Stable 8 85 isobornyl acrylate/ Stable15 methyl acrylate 9 80 isobornyl acrylate/ Phase separation and 20methyl acrylate setting to a solid 10 70 isobornyl acrylate/ Phaseseparation and 30 methyl acrylate setting to a solid

The results obtained show that the dispersions of polymethyl acrylate inisododecane are stable when the stabilizer is an isobornyl acrylatehomopolymer or an isobornyl acrylate/methyl acrylate copolymer with anisobornyl acrylate/methyl acrylate weight ratio>80/20.

Moreover, the film obtained with the oily dispersions of Examples 1, 7and 8 have the following properties:

Gloss at 20° Resistance to fatty substances Tacky 72 Resistant to fattysubstances Non-tacky 69 Resistant to fatty substances Non-tacky 65Resistant to fatty substances Non-tacky

Examples 11 and 12 (Outside the Invention)

Tests were performed with other monomers bearing a cyclic group byreplacing the isobornyl acrylate, performing step 1 of Example 1, i.e.preparing a cyclic monomer/methyl acrylate (92/8) statistical copolymerstabilizer. All the stabilizers prepared in isododecane led to a mediumthat set to a solid in the form of a viscous precipitate. This showsthat such stabilizers are unsuitable for forming an oily dispersionsince they are incompatible with isododecane, in contrast with thestabilizers prepared in Examples 1 to 8 described previously.

Compatibility in Examples Stabilizer isododecane 11 Cyclohexyl acrylate/Incompatible methyl acrylate (92/8) (viscous precipitate) 12 Cyclohexylmethacrylate/ Incompatible methyl acrylate (92/8) (viscous precipitate)

Example 13 Liquid Lipsticks

The following compositions, the ingredients of which are collated in thetable below, are prepared.

The percentages are given as weight relative to starting materials,unless otherwise indicated.

Composition Composition Ingredients 1 invention 2 comparative Tributylcitrate 3.73 3.73 Disteardimonium hectorite (Bentone Gel 10 10 ISDV;Elementis, (hectorite, isododecane, propylene glycol) Ethylcellulose(Aquacoat ® ECD 30 from 26.3 — FMC Biopolymer; dispersion in water ofethylcellulose; sodium lauryl sulfate and cetyl alcohol; 30% solids)Water — 26.3 (Methyl acrylate)-co-(ethyl acrylate)-co- 52.35 52.35(acrylic acid)-co-(isobornyl acrylate) copolymer in isododecaneaccording to Example 4 Cetyl PEG/PPG-10/1 Dimethicone (ABIL 1.5 1.5 EM90 from Evonik Industries) C30-45 Alkyldimethylsilyl 0.53 0.53polypropylsilsesquioxane (Dow Corning SW-8005 C30 Resin Wax from DowCorning) Triglyceryl-4 Isostearate (Isolan GI 34 0.5 0.5 from EvonikIndustries) Pigments 3.33 3.33 Preserving agent 0.7 0.7 Isododecane qsqs

Preparation Protocol

The dispersion of ethylcellulose and the preserving agent is mixed atroom temperature in a beaker with stirring using a magnetic bar.

Separately, the dispersion of polymer particles according to Example 4is mixed with the Bentone gel, the silicone wax predissolved under hotconditions in part of the isododecane, and the remaining isododecane ina suitable container with a speed mixer until a smooth, homogeneousmixture is obtained.

The surfactants (Isolan GI 34 and Abil EM 90) are then introduced intothe preceding mixture in a heating pan and the whole is homogenizedusing a mixer for 2 minutes until a homogeneous, soft, white and opaquephase is obtained.

The pigments preground in part of the isododecane and the tributylcitrate are then added and the whole is homogenized.

The aqueous phase comprising the ethylcellulose is then introduced toobtain the emulsion, and the whole is mixed (mixer, for about 3 minutes)until a thick, smooth, glossy and homogeneous mixture is obtained.

Evaluation of the Compositions

Oil Resistance Test:

The composition is applied to an artificial keratin material support (25μm wet film thickness).

The sample is left to dry for 24 hours at 35° C.

After the drying step, one drop of olive oil is placed on the film ofcomposition and left for 10 minutes.

The oil is then wiped five times using cotton wool.

The integrity of the film after wiping with cotton wool is evaluated toevaluate the oil resistance of the composition, on a scale ranging from1 to 3 (1: excellent resistance, 2: intermediate resistance, and 3: poorresistance).

Tack Evaluation Protocol:

The composition is applied to the lips so as to form a deposit ofhomogeneous thickness.

The tacky nature on touching with a finger was evaluated during thedrying of the formulation after 5 minutes at room temperature (25° C.).

To do this, a finger was applied, after the specified drying period,onto the applied formulation and the tack was assessed by the individualon removal of his finger from the applied formulation.

The two compositions are easy to apply as a deposit which, after drying,is not desiccating.

It is found that the composition according to the inventionsignificantly improves the oil resistance and the tacky nature of thedeposit, when compared with the properties of the deposit of thecomparative composition.

Example 14 Liquid Lipsticks

The following compositions are prepared, the ingredients of which arecollated in the table below.

The percentages are given on a weight basis relative to the startingmaterials, unless otherwise indicated.

Composition 2 Composition 3 Ingredients invention invention Tributylcitrate 2.5 Disteardimonium hectorite (Bentone gel 13.27 8 ISDV;Elementis) (hectorite, isododecane, propylene glycol) Ethylcellulose(Aquacoat ® ECD 30 17.17 18 from FMC Biopolymer; dispersion in water ofethylcellulose; sodium lauryl sulfate, cetyl alcohol; 30% solids) Water— 6.94 (Methyl acrylate)-co-(ethyl acrylate)-co- 61.94 — (acrylicacid)-co-(isobornyl acrylate) copolymer in isododecane (according toExample 3) (Methyl acrylate)-co-(ethyl acrylate)-co- — 57 (acrylicacid)-co-(isobornyl acrylate) copolymer in isododecane (according toExample 4) C30-45 Alkyldimethylsilyl 0.53 0.48 polypropylsilsesquioxane(Dow Corning SW-8005 C30 Resin Wax from Dow Corning) Triglyceryl-4isostearate (Isolan GI 34 0.5 0.67 from Evonik Industries) CetylPEG/PPG-10/1 Dimethicone (Abil 1.5 2 EM 90 from Evonik Industries)Pigments 3.33 2.36 Preserving agent 0.7 0.7 Fragrance — 0.2 Sweetener —0.03 Isododecane qs qs

Preparation Protocol

The dispersion of ethylcellulose, the preserving agent and the sweetenerare mixed in a beaker with stirring using a magnetic bar, at roomtemperature.

Separately, the dispersion of polymer particles according to Example 3is mixed with the Bentone gel, the silicone wax predissolved withheating in part of the isododecane, the rest of the isododecane and thefragrance, if present, in a suitable container with a speed mixer untila smooth, homogeneous mixture is obtained.

Next, the surfactants (Isolan GI 34 and Abil EM 90) are introduced intothe preceding mixture in a heating pan and the whole is homogenizedusing a mixer for 2 minutes until a homogeneous, smooth, white andopaque phase is obtained.

The pigments preground in part of the isododecane and the tributylcitrate are then added and the whole is homogenized.

The aqueous phase comprising the ethylcellulose is then introduced toobtain the emulsion, and the whole is mixed (mixer, for about 3 minutes)until a thick, smooth, glossy and homogeneous mixture is obtained.

Results

The compositions are easy to apply, and give a homogeneous,non-desiccating, non-tacky, oil-resistant deposit (tests performedaccording to the protocols detailed in the preceding example).

Composition 2 invention Composition 3 invention Oil resistance Good GoodTack after 5 minutes Good Good

Example 15 Liquid Lipsticks

The following compositions are prepared, the ingredients of which arecollated in the table below.

The percentages are given on a weight basis relative to the startingmaterials, unless otherwise indicated.

Composition Composition 4 5 (Methyl acrylate)-co-(ethyl acrylate)-co- 4545 (acrylic acid)-co-(isobornyl acrylate) copolymer in isododecane(according to Example 4) Tributyl citrate 2.5 — Ethylcellulose(Aquacoat ® ECD 30 from 15 15 FMC Biopolymer; dispersion in water ofethylcellulose; sodium lauryl sulfate, cetyl alcohol; 30% solids)Preserving agent 0.7 0.7 Water 11.69 11.69 Hydrogenatedstyrene/butadiene copolymer 7.8 3.9 (Kraton ® G-1657 Polymer from KratonPolymers) C30-45 Alkyldimethylsilyl 0.6 0.6 polypropylsilsesquioxane(Dow Corning SW-8005 C30 Resin Wax from Dow Corning) Cetyl PEG/PPG-10/1Dimethicone (Abil 2 2 EM 90 from Evonik Industries) Triglyceryl-4isostearate (Isolan GI 34 0.67 0.67 from Evonik Industries) Pigments 1 1Isododecane qs qs

Preparation Protocol:

The dispersion of ethylcellulose and the preserving agent is mixed in abeaker with stirring using a magnetic bar at room temperature.

Separately, the dispersion of polymer particles according to Example 3is mixed with the Bentone gel, the silicone wax predissolved under hotconditions in part of the isododecane, the Kraton predissolved in partof the isododecane, and the remaining isododecane in a suitablecontainer with a speed mixer until a smooth, homogeneous mixture isobtained.

The surfactants (Isolan GI 34 and Abil EM 90) are then placed in thepreceding mixture in a heating pan and homogenized using a mixer for 2minutes until a white, opaque, supple, homogeneous phase is obtained.

The pigments preground in part of the isododecane and the tributylcitrate, if present, are then added and the whole is homogenized.

The aqueous phase comprising the ethylcellulose is then added to obtainthe emulsion, and the whole is mixed (mixer, for about 3 minutes) untila thick, smooth, glossy and homogeneous mixture is obtained.

Results:

The compositions are easy to apply, give a uniform deposit which isnon-desiccating, non-tacky and oil resistant.

The invention claimed is:
 1. Composition comprising particles of atleast one polymer that is surface-stabilized with a stabilizer, thepolymer of the particles being a C₁-C₄ alkyl (meth)acrylate polymer, thestabilizer being an isobornyl (meth)acrylate polymer chosen fromisobornyl (meth)acrylate homopolymer and statistical copolymers ofisobornyl (meth)acrylate and of C₁-C₄ alkyl (meth)acrylate present in anisobornyl (meth)acrylate/C₁-C₄ alkyl (meth)acrylate weight ratio ofgreater than 4; at least one hydrocarbon-based oil, at least alkylcellulose, the alkyl residue of which comprises between 2 and 6 carbonatoms; and water.
 2. Composition according to claim 1, wherein thepolymer of the particles is a methyl acrylate and/or ethyl acrylatepolymer.
 3. Composition according to claim 1, wherein the polymer of theparticles comprises an ethylenically unsaturated acid monomer or ananhydride thereof.
 4. Composition according to claim 1, wherein thepolymer of the particles comprises from 80% to 100% by weight of C₁-C₄alkyl (meth)acrylate and from 0 to 20% by weight of ethylenicallyunsaturated acid monomer, relative to the total weight of the polymer.5. Composition according to claim 1, wherein the polymer of theparticles is selected from the group consisting of: methyl acrylatehomopolymers; ethyl acrylate homopolymers; methyl acrylate/ethylacrylate copolymers; methyl acrylate/ethyl acrylate/acrylic acidcopolymers; methyl acrylate/ethyl acrylate/maleic anhydride copolymers;methyl acrylate/acrylic acid copolymers, ethyl acrylate/acrylic acidcopolymers; methyl acrylate/maleic anhydride copolymers, and ethylacrylate/maleic anhydride copolymers.
 6. Composition according to claim1, wherein the stabilizer is a statistical copolymer of isobornyl(meth)acrylate and of C₁-C₄ alkyl (meth)acrylate present in an isobornyl(meth)acrylate/C₁-C₄ alkyl (meth)acrylate weight ratio of greater thanor equal to
 5. 7. Composition according to claim 1, wherein thestabilizer is selected from the group consisting of: isobornyl acrylatehomopolymers; statistical copolymers of isobornyl acrylate/methylacrylate; statistical copolymers of isobornyl acrylate/methylacrylate/ethyl acrylate; and statistical copolymers of isobornylmethacrylate/methyl acrylate.
 8. Composition according to claim 1,wherein the hydrocarbon-based oil is chosen from apolarhydrocarbon-based oils containing from 8 to 16 carbon atoms. 9.Composition according to claim 1, wherein the content ofhydrocarbon-based oil ranges from 20% to 75% by weight relative to theweight of the composition.
 10. Composition according to claim 1, whereinthe polymer particles surface-stabilized with a stabilizer areincorporated into the composition in the form of a dispersion in atleast one hydrocarbon-based oil.
 11. Composition according to claim 1,wherein the content of polymer particles is from 5% to 55% by weightrelative to the weight of the composition.
 12. Composition according toclaim 1, wherein the composition comprises at least one mineralthickener selected from the group consisting of optionallyhydrophobic-modified clays, optionally hydrophobic-modified silicones,modified hectorites, bentonites, disteardimonium hectorite,stearalkonium hectorite, quaternium-18 bentonite, stearalkoniumbentonite, quaternium-18/benzalkonium bentonite; optionallyhydrophobic-treated fumed silicas; hydrophobic silica aerogels, andmixtures thereof.
 13. Composition according to claim 1, wherein thecontent of mineral thickener is from 0.2% to 15% by weight relative tothe weight of the composition, expressed as active material. 14.Composition according to claim 1, wherein the composition furthercomprises a hydrocarbon-based block copolymer comprising at least onestyrene block and at least one block comprising units selected from thegroup consisting of butadiene, ethylene, propylene, butylene, isoprene,and mixtures thereof.
 15. Composition according to claim 14, wherein thehydrocarbon-based block copolymer is selected from the group consistingof optionally hydrogenated diblock copolymers ofstyrene-ethylene/propylene, optionally hydrogenated diblock copolymersof styrene-ethylene/butadiene, optionally hydrogenated diblockcopolymers of styrene-ethylene/butylene, styrene-isoprene copolymers,optionally hydrogenated triblock copolymers ofstyrene-ethylene/butadiene-styrene, optionally hydrogenated triblockcopolymers of styrene-butylene/ethylene-styrene, optionally hydrogenatedtriblock copolymers of styrene-isoprene-styrene, optionally hydrogenatedtriblock copolymers of styrene-butadiene-styrene, and mixtures thereof.16. Composition according to claim 14, wherein the content ofhydrocarbon-based block copolymer is from 2.5% to 15% by weight,relative to the total weight of the composition.
 17. Compositionaccording to claim 1, wherein the water content ranges between 10% and50% by weight relative to the weight of the composition.
 18. Compositionaccording to claim 1, wherein the alkylcellulose is chosen fromethylcellulose and propylcellulose.
 19. Composition according to claim1, wherein the alkylcellulose content is from 1% to 8% by weightrelative to the weight of the composition.
 20. Composition according toclaim 19, wherein the composition further comprises at least onesurfactant.
 21. Composition according to claim 20, wherein the contentof surfactant(s) in the composition ranges from 0.2% to 10% by weight,relative to the weight of the composition.
 22. Process for making upand/or caring for a human keratin material in which the compositionaccording to claim 1 is applied to the keratin material.
 23. Compositionaccording to claim 5, wherein the stabilizer is selected from the groupconsisting of: isobornyl acrylate homopolymers; statistical copolymersof isobornyl acrylate/methyl acrylate; statistical copolymers ofisobornyl acrylate/methyl acrylate/ethyl acrylate; and statisticalcopolymers of isobornyl methacrylate/methyl acrylate.
 24. Process formaking up and/or caring for human skin in which the compositionaccording to claim 1 is applied to the skin.